There are approximately ten times as many bacterial cells in the human flora as there are human cells in the body, with large numbers of bacteria on the skin and as gut flora . [ 6 ] The vast majority of the bacteria in the body are rendered harmless by the protective effects of the immune

The first description of magnetotactic bacteria appeared in 1963 in a publication of the Microbiology Institute ( Italian : Instituto di Microbiologia ) of the University of Pavia written by Salvatore Bellini. [ 3 ] While observing bog sediments under his microscope, he noticed a group of

the original morphology and stable L-forms , L-forms which are unable to revert to the original bacteria . Some parasitic species of bacteria , such as mycoplasma , also lack a cell wall [ 3 ] , but these are not considered as L-forms since they are not derived from bacteria that normally

Pathogenic bacteria are bacteria that cause bacterial infection . This article deals with human pathogenic bacteria . Although the vast majority of bacteria are harmless or beneficial, quite a few bacteria are pathogenic . One of the bacterial diseases with highest disease burden is